1085705979 has 8 divisors (see below), whose sum is σ = 1447763520. Its totient is φ = 723726216.

The previous prime is 1085705977. The next prime is 1085705981. The reversal of 1085705979 is 9795075801.

It is an interprime number because it is at equal distance from previous prime (1085705977) and next prime (1085705981).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1085705979 - 2¹ = 1085705977 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1085705977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34552 + ... + 58010.

It is an arithmetic number, because the mean of its divisors is an integer number (180970440).

Almost surely, 2^1085705979 is an apocalyptic number.

1085705979 is a deficient number, since it is larger than the sum of its proper divisors (362057541).

1085705979 is a wasteful number, since it uses less digits than its factorization.

1085705979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38889.

The product of its (nonzero) digits is 793800, while the sum is 51.

The square root of 1085705979 is about 32950.0527920670. The cubic root of 1085705979 is about 1027.7892631635.

The spelling of 1085705979 in words is "one billion, eighty-five million, seven hundred five thousand, nine hundred seventy-nine".